diff options
Diffstat (limited to 'kexec/crashdump-xen.c')
| -rw-r--r-- | kexec/crashdump-xen.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/kexec/crashdump-xen.c b/kexec/crashdump-xen.c index 23d6b1f..44e5dfc 100644 --- a/kexec/crashdump-xen.c +++ b/kexec/crashdump-xen.c @@ -25,14 +25,19 @@ struct crash_note_info { unsigned long length; }; -int xen_phys_cpus = 0; -struct crash_note_info *xen_phys_notes; +static int xen_phys_cpus; +static struct crash_note_info *xen_phys_notes; +static int is_dom0; int xen_present(void) { - struct stat buf; - - return stat("/proc/xen", &buf) == 0; + if (!is_dom0) { + if (access("/proc/xen/capabilities", F_OK) == 0) + is_dom0 = 1; + else + is_dom0 = -1; + } + return is_dom0 > 0; } unsigned long xen_architecture(struct crash_elf_info *elf_info) |